/* ObjectType.java
 *
 * Copyright 2006, Tim Dwelle.
 *
 * Licensed under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in
 * compliance with the License.  You may obtain a copy of
 * the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in
 * writing, software distributed under the License is
 * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
 * CONDITIONS OF ANY KIND, either express or implied.  See
 * the License for the specific language governing
 * permissions and limitations under the License.
 *
 */

package dowry.hibernate;

import java.util.*;
import org.hibernate.cfg.*;
import org.hibernate.mapping.PersistentClass;
import org.hibernate.mapping.Property;
import org.hibernate.util.*;
import dowry.*;

/**
 * Object representation of an Object datatype.
 *
 */
public class ObjectType
    extends dowry.datatype.ObjectType
    implements HibernateType
{
    /**
     * Generates a map of attributes for the specified
     * Hibernate property, based on the rules of this
     * datatype.
     *
     * @param entityMapper  a handle back to the entity
     *                      mapper processing the Hibernate
     *                      configuration
     *
     * @param property      the Hibernate property
     *
     * @return              a Map containing the relevant
     *                      Dowry attributes
     *
     */
    public Map toConfiguration(HibernateEntityMapper entityMapper,
                               Property property)
    {
        Map m = new HashMap();

        String propertyType = entityMapper.getPropertyType(property);
        m.put(JAVA_CLASS, propertyType);
        m.put(TYPE, entityMapper.toType(propertyType));
        m.put(REQUIRED, new Boolean(!property.isOptional()));

        // get the name of the property that is the
        // unique identifier for this object
        HibernateProvider provider =
            entityMapper.getHibernateProvider();

        if (provider != null)
        {
            Configuration cfg = provider.getConfiguration();
            PersistentClass propertyClass = cfg.getClassMapping(propertyType);
            if (propertyClass != null)
            {
                if (propertyClass.hasIdentifierProperty())
                {
                    Property idProperty = propertyClass.getIdentifierProperty();
                    if (idProperty != null)
                    {
                        String idName = entityMapper.getPropertyName(idProperty);
                        m.put(KEY, idName);
                    }
                }
            }
        }

        return m;
    }
}
